An Investigation on High-Speed Optical Transmission Technology for Datacenter

Datacenter is an important product of information society and an important supporting part for the development of new Internet businesses. With the emergence of a large number of new Internet technologies, the network demand and data traffic of users are growing rapidly. Datacenter needs larger data capacity and better system performance. High-speed optical interconnection technology has attracted more and more attention and become the main solution to the problem of traffic growth in datacenter, with its characteristics of high bandwidth, low loss and low cost. In this paper, several mainstream signal modulation formats, digital signal processing (DSP) compensation algorithms and signal damage compensation algorithms are investigated for intra datacenter optical interconnection and inter/extended datacenter optical interconnection, respectively. Their principles, performance, advantages and disadvantages are analyzed and compared in detail, and the future development of datacenter optical transmission is prospected.